Code Style. Dart
Use this section to configure formatting options for Dart files. When you change these settings, results of a change are displayed in the Preview pane.
In this tab choose whether you want to format your Dart code using the dartfmt tool.
Use the dartfmt tool when formatting the whole file
Tabs and Indents
Use tab character
An indentation consists of two parts. One part results from nesting code blocks, and the other part is determined by alignment.
In this field, specify the number of spaces that fits in a tab.
In this field, specify the number of spaces (or tabs if the Use tab character checkbox is selected) to be inserted for each indent level.
In this field, specify the number of spaces (or tabs if the Use tab character checkbox is selected) to be inserted between the elements of an array, in expressions, method declarations, and method calls.
Keep indents on empty lines
If this checkbox is selected, IntelliJ IDEA retains indents on empty lines as if they contained some code. If the checkbox is cleared, IntelliJ IDEA deletes the tab characters and spaces on empty lines.
Wrapping and bracesIn this tab, customize the exceptions, brace placement and alignment options that IntelliJ IDEA will apply to various code constructs on reformatting the source code. Check the results in the Preview pane.
Hard wrap at
In this field, specify the number of spaces required to the right of an element. If you accept the Default option then the value from the global settings is used.
Wrap on typing
In this field, specify how the edited text is fitted in the specified Hard wrap at field.
In this field, specify multiple right margins. You can leave a default value or enter the number of spaces for your margin. If you want to specify several margins, enter numbers separated by comma.
Keep when reformatting
Use the checkboxes to configure exceptions that IntelliJ IDEA will make when reformatting the source code. For example, by default, the Line breaks checkbox is selected. If your code contains lines that are shorter than a standard convention, you can convert them by disabling the Line breaks checkbox before reformatting.
A wrapping style applies to various code constructs, specified in the left-hand pane (for example, method call arguments, or assignment statements).
Braces placement options
Use this tab to define where and how many blank lines you want IntelliJ IDEA to retain and insert in your code after reformatting. The results are displayed in the Preview pane.
Keep Maximum Blank Lines
In this area, specify the number of extra blank lines to be kept after reformatting.
On this tab, configure the code style for generated code.
Insert @override annotation
The link appears in the upper-right corner of the page, when applicable. Click this link and choose the language to be used as the base for the current language code style.
To return to the initial set of code style settings and discard the changes, click Reset.